One is that atmospheric pressure is dramatically reduced at high altitudes, so a helium balloon expands as it rises and eventually explodes. If you inflate a balloon beyond its limits at room ...

The massive helium balloons that will float through New York ... one of dozens of people helping inflate the stars of ...

For the first time in its 57-year history, the Wellesley Veterans Parade on Sunday, May 18 (1-3pm) will feature three giant 8 ...